Home / 10,581.30-15,864.36-5,312.55

Finding the Fourth Proportional to 10,581.30, 15,864.36 and 5,312.55

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Solution

The fourth proportional to 10,581.30, 15,864.36 and 5,312.55 is: 7,965.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,581.30 : 15,864.36 = 5,312.55 : x
  2. Step 2: Convert to fraction form
    10,581.30/15,864.36 = 5,312.55/x
  3. Step 3: Cross multiply
    10,581.30x = 15,864.36 × 5,312.55
  4. Step 4: Simplify right side
    10,581.30x = 84,280,245.29
  5. Step 5: Solve for x
    x = 84,280,245.29/10,581.30
  6. Step 6: Final answer
    x = 7,965.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.